Combination cutting tool and wrench for removing studs



J. WILK June 15, 1948.

COMBINATION CUTTING TOOL AND WRENCH FOR REMOVING STUDS Filed Dec. 13,1944 y p v I I l l Patented June 15, 1948 2,443,215 COMBINATIONCUTTING-"soon AND wnnivonron REMOVING Swims Joseph Wilk, Miiiin, Ala.Appiication December 13,.1944,stamin -568,024

(o1. sheer (Granted under the act of March 3, 1883, as amended April 30,1928; 370 0. G. 757) 1 Claim.

This invention relates to a stud remover and has for an object toprovide an improved stud remover less liable to breakage than the usualstud puller.

A further object of this invention is to provide an improved studremover wherein the parts of the remover are in tight contact with eachother when in operation, and hence, are not so easily broken.

A still further object of this invention is to provide an improved studremover made of a minimum number of parts.

Another object of this invention is to provide a stud remover wherein aplurality of cutting heads of various sizes may be used with the samewrench socket, thus reducing the number of wrench sockets needed to aminimum for handling a great variety of sizes of studs.

With the foregoing and other objects in view, the invention consists inthe construction, combination and arrangement of parts hereinafter setforth, claimed and illustrated in the drawing in which:

Fig. 1 is a partly sectional, partly elevational view of the studremover assembly of this invention.

Fig. 2 is a similar sectional view showing a stud about to be removed.

Fig. 3 is a partly sectional, partly elevational View showing thecutting head being removed from the wrench socket, and

Fig. 4 is a sectional view on line i-=l of Fig. 1.

There is shown at H) the stud remover of this invention particularlyintended for removing a stud, broken or otherwise, from any location,such as a stud l I that it is desired to remove from the metal block l2,the stud ll having been broken ofl accidentally, as at it, making itimpossible to apply a, conventional wrench thereto.

The stud remover includes a wrench socket I l having a squared shank i5and provided with a slightly tapered bore l5. Adapted to be inserted inthis tapered bore H5 is a tapered cutting head H. The taper of the headH and the bore I6 is very slight, preferably one-half a, degree, and theshowing on the drawing has been exaggerated for purposes .ofillustration. As a result of such slight taper, the cutting head llmakes a very tight fit into the bore I6 and a key pin I8 is provided ina pin hole 20 extending partly into the wall of the bore l6 and the wallof the head I1. Extendable through a diagonal opening 2| in the wrenchsocket I4 is a head removing pin 22 adapted to contact the inner end ofthe head 11. The cutting head I! is provided with a squared axialopening 23 .Of appropriate size for cooperation with the stud l I. Theforward face it of the cutting head is beveled to provide a cutting edge26 at the intersection of the Wall of the squared opening and thebeveled end. A series of cutting heads I! having squared openings 23 ofsizes ranging from one-quarter to onehalf inch by sixteenths may beprovided. for a single wrench socket I4 and a corresponding largerseries may be provided for a larger wrench socket. Thus, five cuttingheads may be provided for the one wrench socket illustrated in making upthe set.

In operation, in order to remove the stud H, the cutting head l'i havingthe squared opening 23 of appropriate size is placed in the bore IQ ofthe wrench socket M with the key pin [8 occupying its cooperatingaperture 20. Due to the slight taper the cutting head ll will make asnug and tight fit in the bore It. The squared opening 23 is placed overthe stud end 13 and a hammer force is applied against the end 24 of thesquared shank 15 until the cutting head I! has been driven over the studH, as shown, the cutting edge 26 shearing off a portion of the stud andcutting a squared end 25 thereon. A conventional wrench is then appliedon the squared shank It: for rotating the stud I I out of the metalblock l2.

To remove the stud II from the squared opening 23 the cutting head I! isfirst removed from the bore l5 by means of the pin 22, being forcefullyextended through the opening 2! against the inner end of the cuttinghead [1. Then with the cutting head I? removed from the bore 16, thesame pin 22 or other appropriate tool may be inserted through the otherend of the squared opening 23 to knock the stud ll out of the cuttinghead l'l.

Other modifications and changes in the numher and arrangement of theparts may be made by those skilled in the art without departing from thenature of this invention, within the scope of what is hereinafterclaimed.

The invention herein described and. claimed may be manufactured and usedby or for the Government of the United States of America forgovernmental purposes without the payment of any royalties thereon ortherefor.

What is claimed is:

A stud remover comprising a wrench socket provided with a slightlyoutwardly tapered bore at one end and a wrench cooperating shank at theother end, a similarly tapered stud cutting head adapted to be insertedin the tapered bore,

said stud cutting head having a squared opening extending axiallytherethrough, the end of the wallsurrounding the squared opening beingprovided with a beveled face to form a cutting edge at the intersectionof the wall of the squared opening and the beveled face for cutting asquared portion on a stud to be removed, a, key pin, said key pinadapted to be inserted into an aperture formed by cooperating recessesin the bore wall and the cutting head wall, and cutting head re- Thefollowing references are of record in the 6 file of this patent:

UNITED STATES PATENTS moving means comprising a pin, said wrench sockethaving a pin opening therethrough extending an-gularly to the inner sideof said cutting head whereby said pin may be driven against the head toremove it from said wrench socket.

JOSEPH WILK,

Number Name I Date. Sayers Feb. 19, 1901 Lucas Dec. 8, 1908 Mueller Apr.23, 1912 Gay Dec. 9, 1919 Roger Apr. 8, 1924 Maslewski June 2, 1931

